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Handles the create-or-update\npattern automatically — if a file already exists (409 conflict), it falls back\nto updating it.\n\n## Usage\n\n```ts\nimport { writeFile } from \"https://esm.town/v/nbbaier/writeFile/index.ts\";\n\nconst result = await writeFile({\n path: \"hello.txt\",\n content: \"Hello, world!\",\n type: \"file\",\n callerUrl: import.meta.url, // writes to the val that calls this function\n});\n\nconsole.log(result);\n// { success: true, action: \"created\", id: \"...\", name: \"hello.txt\", url: \"...\" }\n```\n\n## Parameters\n\n`writeFile` accepts a single object with the following properties:\n\n| Parameter | Type | Required | Description |\n| ----------- | -------- | -------- | --------------------------------------------------------------------------------- |\n| `path` | `string` | ✅ | File path within the val (e.g. `\"src/utils.ts\"`) |\n| `content` | `string` | ✅ | The file content |\n| `type` | `string` | ✅ | File type (`\"file\"`, `\"http\"`, `\"script\"`, `\"interval\"`, `\"email\"`) |\n| `callerUrl` | `string` | ✅ | Pass `import.meta.url` to target the calling val. |\n| `valId` | `string` | ❌ | Target val ID. Takes precedence over `callerUrl` if both are provided. |\n| `token` | `string` | ❌ | Val Town API bearer token. Defaults to the `VT_WRITE_TOKEN` environment variable. |\n\n## Return Value\n\nOn success:\n\n```ts\n{\n success: true,\n action: \"created\" | \"updated\",\n id: string, // file ID\n name: string, // file name\n url: string, // link to the file on val.town\n}\n```\n\nOn error:\n\n```ts\n{\n success: false,\n error: string, // the error message (or \"unknown error\")\n}\n```\n\n## Authentication\n\nBy default, the function looks for a `VT_WRITE_TOKEN` environment variable. You\nneed a Val Town API token with write permissions. You can also pass a `token`\ndirectly:\n\n```ts\nawait writeFile({\n path: \"data.json\",\n content: JSON.stringify({ key: \"value\" }),\n type: \"file\",\n callerUrl: import.meta.url,\n token: \"your-api-token\",\n});\n```",[139],"eabd02f2-2fcc-11f1-95f5-42dde27851f2","output","b559eb8c-1bc1-4ccf-961f-851db8cce272",263,["D",1775269258318],0,"directory",[147],"pulls","branches","forks","envVars",{"_161":59,"_163":151},"connections",{"_161":151,"_162":151},"count","unfilledCount","emptyCount",{"_42":146,"_32":147,"_30":148,"_129":-5,"_40":41,"_39":149,"_131":26,"_37":205,"_13":151,"_34":152,"_35":-5,"_23":26,"_136":-5,"_172":206,"_27":207},{"_42":198,"_32":199,"_30":200,"_129":148,"_40":41,"_39":149,"_131":26,"_37":201,"_13":151,"_34":20,"_35":202,"_23":26,"_136":-5,"_172":203,"_27":204},{"_42":190,"_32":191,"_30":192,"_129":148,"_40":41,"_39":193,"_131":26,"_37":194,"_13":151,"_34":20,"_35":195,"_23":26,"_136":-5,"_172":196,"_27":197},{"_42":182,"_32":183,"_30":184,"_129":148,"_40":41,"_39":185,"_131":26,"_37":186,"_13":151,"_34":20,"_35":187,"_23":26,"_136":-5,"_172":188,"_27":189},{"_42":178,"_32":33,"_30":31,"_129":148,"_40":41,"_39":14,"_131":26,"_37":179,"_13":151,"_34":20,"_35":36,"_23":26,"_136":-5,"_172":180,"_27":181},{"_42":138,"_32":139,"_30":140,"_129":-5,"_40":41,"_39":141,"_131":24,"_37":175,"_13":143,"_34":20,"_35":144,"_23":26,"_136":-5,"_172":176,"_27":177},{"_42":126,"_32":127,"_30":128,"_129":-5,"_40":41,"_39":130,"_131":26,"_37":171,"_13":133,"_34":134,"_35":135,"_23":26,"_136":-5,"_172":173,"_27":174},["D",1775269191488],"children",[],[127],["D",1775269199522],[],[139],"ead5bd38-2fcc-11f1-a821-42dde27851f2",["D",1775269258479],[],[147,33],"eacc3376-2fcc-11f1-a821-42dde27851f2","html3.html","eacc3434-2fcc-11f1-a821-42dde27851f2",265,["D",1775269258415],"\n

No Frontmatter

Just plain markdown.

",[],[147,183],"eac3e9a0-2fcc-11f1-95f5-42dde27851f2","html2.html","eac3ea54-2fcc-11f1-95f5-42dde27851f2",264,["D",1775269258363],"\nCustom Layout Test | My Blog

Custom Layout Test

Sat Apr 04 2026 00:00:00 GMT+0000 (Coordinated Universal Time)

Some content here.

",[],[147,191],"eabcdfca-2fcc-11f1-95f5-42dde27851f2","html1.html","eabce07e-2fcc-11f1-95f5-42dde27851f2",["D",1775269258318],"\nMy First Post

Hello World

This is bold and this is italic.

Item 1
Item 2

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